The Gib'Sea 90 Plus, introduced in 1980 by Gibert Marine, stands as a quintessential example of the French performance-cruiser evolution during the IOR (International Offshore Rule) era. Designed by the prolific naval architecture firm Joubert-Nivelt, the 90 Plus was engineered as the high-performance counterpart to the standard Gib'Sea 90. While the standard model catered to the burgeoning family cruising market, the "Plus" designation signaled a yacht optimized for club racing and the 3/4 Tonner circuit. The boat is characterized by its significant beam for its length—a hallmark of Joubert-Nivelt designs from this period—which was intended to provide both initial stability and substantial interior volume. Built in Marans, France, the hull features a solid fiberglass laminate, while the deck utilizes a balsa-core sandwich construction to save weight aloft.
Gib'Sea 90 Plus Information, Review, Specs
- Make
- Gib'Sea
- Model
- 90 Plus
- Builder
- Gilbert Marine
- Designer
- Jacques Fauroux
- Number Built
- 40
- Production Year(s)
- 1982 - 1984
Sailing Performance & Handling
The Gib'Sea 90 Plus is a markedly different beast than its standard cruising sibling. The "Plus" variant features a taller, fractional rig and a deeper, high-aspect lead keel (approximately 1.70m draft) compared to the standard 90’s shorter mast and shallower cast-iron keel. This configuration results in a significantly higher sail area-to-displacement ratio, making the boat exceptionally responsive in light to moderate airs.
According to historical performance data from the era's regattas, the 90 Plus was noted for its ability to point high to windward, thanks in part to its deep keel and the fine entry of the bow. However, like many IOR-influenced designs of the early 80s, the boat features a wide maximum beam that is carried well aft, which can lead to a "twitchy" feeling when pressed hard off the wind in heavy seas. Owners often report that the boat tracks well but requires active sail trimming and early reefing to maintain balance as the breeze stiffens. The large rudder provides ample leverage, though the tiller-steered setup can become heavy if the boat is allowed to heel excessively.
Interior Comfort & Variations
Despite its racing pedigree, the Gib'Sea 90 Plus does not sacrifice the "French cruising comfort" for which Gibert Marine was known. The design utilizes the 3.30-meter beam to create an interior that feels considerably larger than its 9.15-meter (30-foot) length suggests. The layout typically features a V-berth forward, a central salon with settee berths, and a compact but functional galley to port.
One of the most notable variations between the 90 and the 90 Plus involves the aft section. While the standard Gib'Sea 90 often focused on a more enclosed aft cabin for privacy, the 90 Plus frequently utilized a more open "quarter berth" arrangement or a singular aft cabin to optimize weight distribution for racing. The woodwork is predominantly teak veneer over marine plywood, which, while durable, can show its age if the deck hardware has not been properly bedded over the decades. Headroom is generous for a 30-footer, typically hovering around 1.80 meters in the main salon, allowing for comfortable standing room for most sailors.
Known Issues & Buyer’s Checklist
Prospective buyers should approach a Gib'Sea 90 Plus with a checklist focused on its 1980s construction methods and its history as a performance boat:
- Deck Core Saturation: The balsa-cored deck is susceptible to moisture ingress, particularly around the chainplates, stanchion bases, and the large "Plus" rig's mast step. Spongy sections or brown weeping around fittings are high-signal warnings of delamination.
- Keel-to-Hull Joint: Given the 90 Plus’s deeper keel and potential history of hard racing or groundings, the keel bolts and the surrounding fiberglass grid (the "matrix") must be inspected for stress cracks or "smile" lines at the leading edge of the keel.
- Osmotic Blistering: Early 80s Gib'Seas are known to be prone to osmosis if they have not been treated with an epoxy barrier coat. A hull survey is essential to check the moisture levels in the laminate.
- Rigging Loads: The taller fractional rig on the Plus model exerts higher loads on the hull than the standard cruiser. Check the internal tie-rods and the bulkhead attachments for any signs of movement or structural fatigue.
- Rudder Bearings: The large spade rudder can develop significant play in the bearings over time, leading to a vibrating or "clunky" feel through the tiller.
The Verdict
The Gib'Sea 90 Plus remains a compelling choice for the sailor who wants a vintage French cruiser with a "sleeper" performance edge. It successfully bridges the gap between a dedicated racer and a family cruiser, offering a level of interior volume that remains competitive with modern designs of the same length.
Pros
- Exceptional interior volume and beam for a 30-foot vintage yacht.
- Enhanced light-air performance compared to most contemporary cruisers.
- The deep lead keel provides better stability and pointing ability than the standard version.
- Robust hull construction (solid GRP below the waterline).
Cons
- High-maintenance balsa-cored decks are prone to rot if neglected.
- IOR-influenced hull shape can be demanding to handle in heavy following seas.
- Standard 1980s French interior finishes may require significant cosmetic updating.
- Deep draft may limit access to some shallow-water cruising grounds.
Measurements
Construction & Hull
- Construction Material
- Fiberglass
- Hull Type
- Monohull Sailboat
- Keel Type
- Fin
- Rudder
- 1x Spade
- Ballast
- 2205 lbs
- Displacement
- 6393 lbs
- Water Capacity
- -
- Fuel Capacity
- -
Dimensions
- Length Overall (LOA)
- 29.69 ft
- Waterline Length (LWL)
- 25.26 ft
- Beam
- 10.5 ft
- Draft
- 5.58 ft
- Max Headroom
- -
- Air Draft
- -
Rig & Sails
- Rig Type
- Fractional Sloop
- P (Main Luff)
- -
- E (Main Foot)
- -
- I (Foretriangle Height)
- -
- J (Foretriangle Base)
- -
- Forestay Length (est)
- -
- Sail Area
- 559 sqft
Calculations
- Sail Area / Displacement (SA/D) Ratio
- 25.96
- Ballast / Displacement Ratio
- 34.49
- Displacement / Length Ratio (D/L) Ratio
- 177.07
- Comfort Ratio
- 16.21
- Capsize Screening Formula
- 2.26
- Hull Speed
- 6.73 kn